Members of the Stony Brook marching band perform in the annual Columbus Day parade on October 13, 2014 in New York City. (Credit: Getty/Spencer Platt)

The celebrations begin at St. Patrick's Cathedral for the Columbus Day Mass at 9:30 a.m., followed by the march up Fifth Avenue around 11:30 a.m. About 35,000 marchers from 100 groups -- including bands, floats and organizations from around the world -- will take part in the parade.

Columbus Day Parade expected to draw one million New Yorkers

The city will mark Columbus Day with the annual march up Fifth Avenue Monday, and organizers expect one million New Yorkers to line the parade route.

The celebrations begin at St. Patrick's Cathedral for the Columbus Day Mass at 9:30 a.m., followed by the march up Fifth Avenue around 11:30 a.m. About 35,000 marchers from 100 groups -- including bands, floats and organizations from around the world -- will take part in the parade.